Cork facing for rolls



H. F. BUSCH CORK FACING FOR ROLLS Deg. 18, 1928.

File J 51, 1927 2 Sheets-She et Dec. 18, 1928.

H. F. BUSCH CORK FACING FOR ROLLS Filed Jan- 31, 192 2 Sheets-Sheet 2 v INZjTgOR WWM Patented Dec. 18,1928.

UNITED STATES PATENT or cs.

HERMAN F. BUSCH, OF MILLVALE, PENNSYLVANIA, ASSTGNOB TO-ABMSTRbNG CORK COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF". PENN SYL- vANIA.

CORK FACING FOR 7 ROLLS.

Application filed-January a1, 1927. Serial n. 165,002.

The present invention relatesto cork fac;

ing for rolls, and moreparticularly to cork facing for worsted drawing andspinnlng rolls or the like, and to the method of applyingthe facing.

spinning of worsted yarns. They are usually about 5 to 7 inches in diameter, and are covered either with a sheet of-high grade leather or with a sheet of compressed artificial cork, cemented to the roll body which is of metal. In covering suclrrolls with artificial corkaccording to the previous practice, a flat sheet of compressed artificial cork of the proper thickness and width was cut to the approximate circumference of the roll. The flat sheet or strip was-then wrapped around the roll, the edgestrimmed to fitsnugly together and then the edges held down in place by compression clamps until the cement betweeh the 'roll body and the cork had set. It has been found thatthere was a tendency of the abutting edges of the ends of the strips to spring away fromthe roll body, due to the natural tendency of the initially fiat sheet of cork td straighten out.

Ihave overcome this tendency by initially curling the ends of the strip of compressed artificial cork so that the end edges tend to .lie snugly against theface of the roll body to be covere In the drawings, which illustrate the preferred embodiment of my invention:

Figure 1 is a perspective View of the clamp for curling the ends of the cork strips;

Figure 2 is an end elevation of a roll to which the cork strip is being applied;

Figure 3 is a similar view showing the cork strip applied and held in place by the pin c p;

Figure 4- is a side elevation of the roll as, covered 'Figure 5 is a perspective view of the pin clamp; and

Figure 6 is an end elevation of' a Worsted 'roll showing a modification, in that the cork strip initially has a fiat middle portion with the, ends only curled.

Referring to the illustrated embodiment of the invention, strips of'com ressed artificial cork sheet are cut to a lengt suflicient to be wrapped aroundthe worsted rolls. These strips, which are indicated by reference numeral 1, have their ends placed in a mold formed of two members a and 4, which are These rolls are used in the drawing and clamped together by the bolt 4. The opposing faces of the clamping members are formed so as to curl the ends of the strips 1,

- as indicated in Figure 2. Along mold having a number of clamped strips is placed in an oven which heats ,the cork and permanently. sets it into the form shown in Figure 1, with the cork bent into a generally circular shape and with the ends 5 of the strips rather more sharply curled. The ends 5 are preferably curled somewhat more sharpl than the cur vature of the roll to be covered so that the extreme ,ends of the strip will tend to hug against the roll. 7 p v The cork mix usually consists of granulated cork and a binder, usually, for example, a gelatine or glycerine'binder, set with formaldehyde under heat and pressure, to compress the cork into the well known compressed artificial cork sheets. When thestrips of such artificial cork are secured in the mold and placed in the heated oven, the strips are softened and are given a permanent bend or set.

The strips are preferably cut to a length slightly less than the circumference of the roll, about one-quarter ofan inch less, so that when they are applied, they are slightly strips to be preformed with a smooth finish and does away with the trimming of the abutting edges as is 'now usually done in covering the rolls.

In Figure 2, is shown one of the cork strips 1, as first applied to the roll which is to be covered. The strip 1 is of a generally circular shape and since the ends 5 .tend to draw together, it retains itself on the roll 6. The strip is slightly stretched and firmly wrapped around the roll by two pusher clamps 7, which are brought in from each side to engage the strip near its end and, stretch it slightly and bring the abutting edges 8 together. v

The roll 6 is, of course, covered with a suitable adhesive before the cork strip is applied to it. After the strip is applied and its abutting. edges brought' toget er, a pin clamp 9 is placed over the abutting edges to hold the strip in position until the cement is set. The pin clamp 9 is then removed, and the. roll is ready for use.

As shown in the drawings, the ends, of the strip are "curled around a radins preferably omewhat smal er than the adius of he r l 6, so that the end edges have a tendency to curl in and lie snugly against the face of the roll to be covered. The permanent set given to the curled ends of the strip overcomes the tendency heretofore encountered in flat strips of the ends tending to lift away from the roll. While it is preferred to bend the entire strip into a generally circular shape, as shown in Figures 1 and 2, it is not essential that the middle part of the strip be so bent, so long as the ends are given a permanent curl. As indicated in dotted lines in, Figure 6, the strip 1 has its middleportion 1O flat, but with the ends 5 curled so as to hug against the roll 6 to be covered.

While I have specifically illustrated and described the preferred embodiment of my invention, it is to be understood that the in vention is not so limited, but'may be other wise embodied within the scope of thefollowing claims.

I claim:

l. A preformed'strip of compressed arti" ficial cork for cov'erin a roll, having its ends curled sot-hat its on ed es will lie snugly against the face of the re A to be covered.

2. The process of coverin a roll with compressed artificial cork, whic comprises permanently setting the endsof a sheet of compressed artificial cork into a curled condition and cementing the sheet in place on the roll.

3. The process of covering a roll with compressed artificial cork, which comprises forming a strip of cork of a length suflicient to bewrapped around the roll with its ends permanently curled, and cementing the strip to the roll with its ends held in abutting contact.

4. The process-of covering a roll with comrcsscd artificial cork, which comprises i'o'rmmg a strip of cork of a length sufficient to be Wrapped around the roll and of a permanently generally circular shape so as to naturally conform to the roll, and cementing the strip to the roll with its end edges in abutting contact.

5. The process of covering a roll with compressed artificial cork, which comprises forming a strip of compressed artificial cork of a length slightly less than the circumference or the roll and, having its ends permanently curled, applying the strip to the roll together with an adhesive, and holding thc'edges together until the adhesive is set.

6. The process of covering a roll with compressed artificial cork which compriscscpermanently setting the ends of a'sheet of compressed artificial cork into an arc of a circle of less diameter than the diameter of the roll, and cementing the sheet in place on the roll.

7. The process of covering a roll with compressed artificial cork which comprises perr'nanently setting the ends of a sheet of compressed artificial cork into an arc of a circle of less diameter than the diameter of the roll,

and cementing the sheet in place on the roll in abutting contact.

In testimony whereof I have hereunto set my hand.

HERMAN r. BUSCH. 

